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3 years ago

How to use proton, neutron, and isotope in a sentence

2 answers:

8 0

An isotope of an element contains the same number of protons as the original element however, the number of neutrons depends on the different isotopes of the element.

Natalka [10]3 years ago

7 0

An isotope of an element contains the same number of protons and electrons, but different number of neutrons.

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I was driving along at 20 m/s, trying to change a CD and not watching where I was going. When I looked up, I found myself 45 m f

cricket20 [7]

Answer:

$a=4.44\frac{m}{s^2}$

Explanation:

First we have to find the time required for train to travel 60 meters and impact the car, this is an uniform linear motion:

$t=\frac{d}{v}\\\\t=\frac{60m}{30\frac{m}{s}}=2s$

The reaction time of the driver before starting to accelerate was 0.50 seconds. So, remaining time for driver is 1.5 seconds.

Now, we have to calculate the distance traveled for the driver in this 0.5 seconds before he start to accelerate. Again, is an uniform linear motion:

$d=vt\\d=20\frac{m}{s}(0.5s)=10m$

The driver cover 10 meters in this 0.5 seconds. So, the remaining distance to be cover in 1.5 seconds by the driver are 35 meters. We calculate the minimum acceleration required by the car in order to cross the tracks before the train arrive, Since this is an uniformly accelerated motion, we use the following equation:

$d=v_0t+\frac{1}{2}at^2\\a=\frac{2(d-v_0t)}{t^2}\\a=\frac{2(35m-20\frac{m}{s}*1.5s}{(1.5s)^2}\\a=4.44\frac{m}{s^2}$

7 0

4 years ago

Solve each of the following problems to 3 sig figs and correct Sl units, showing all work.

Salsk061 [2.6K]

Answer:

every number to 3 sf = 1) 45.0 2) 250 3) 1.30

Explanation:

your welcome :)

4 0

3 years ago

When bitten by an animal, one should:

Scrat [10]

Answer:

consider rabies injections if the animal is not found

hope it helps

4 0

3 years ago

Read 2 more answers

Why do noble gasses rarely react with other elements?

ollegr [7]

Noble gasses have an outer shell full of electrons. A full outer energy level is the most stable arrangement of electrons. As a result, noble gases cannot become more stable by reacting with other elements and gaining or losing valence electrons. Therefore, noble gases are rarely involved in chemical reactions and almost never form compounds with other elements.

3 0

2 years ago

A hunter stood at about 60 m away from a tree. He used the bow to release the arrow in order to shoot a coconut held by a monkey

Marianna [84]

Answer:

Time taken to reach the tree

they have given the maximum height which is 25m

therefore...

v=u+at (upward)

0 = 45sin(20)-9.81t

t = 1.56s

3 0

3 years ago